Sigma Japan today unveiled the Sigma DP2 [JP], the successor model to the DP1, which was released earlier this year and received lukewarm reviews. As of now, there is no word of the new camera on Sigma’s American web site.

The Sigma DP2 features a 3-layer 14 megapixel Foveon X3 sensor (2,652×1,768) with an updated True (“Three-layer Responsive Ultimate Engine”) image processor to enhance image quality and boost processing speed.

Sigma also equipped the DP2 with a new 24.2mm F2.8 lens (equivalent to 41mm on a 35mm SLR camera). The camera comes with a 2.5-inch LCD display and is sized at 113.3×54.6×59.5mm (4.3mm thinner than the DP1).

Sigma will present the camera to the general public during the Photokina 2008, a trade show that starts today in Cologne/Germany. There is no word yet from the company regarding price or release date (not even for the Japanese market).